CN113691926B - Sounding layer tensioning process - Google Patents
Sounding layer tensioning process Download PDFInfo
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- CN113691926B CN113691926B CN202111004997.4A CN202111004997A CN113691926B CN 113691926 B CN113691926 B CN 113691926B CN 202111004997 A CN202111004997 A CN 202111004997A CN 113691926 B CN113691926 B CN 113691926B
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- shaping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
Abstract
The invention discloses a sounding layer tensioning process, which comprises the following steps: a frame attaching region is arranged on the non-sounding layer backboard, and the sounding layer backboard and the non-sounding layer backboard are subjected to frame attaching through the frame attaching region; shaping the sounding layer at a certain shaping temperature and shaping time, tensioning the sounding layer after shaping, wherein the shaping temperature range is 50-200 ℃, and the shaping time range is 5-180 min. The invention can realize shrinkage shaping of the sounding layer, so that the sounding layer is not easy to creep in the working process, and the ultrasonic acoustic characteristics of the related directional ultrasonic products are not affected.
Description
Technical Field
The invention relates to a membrane tensioning technology, in particular to a sounding layer tensioning technology.
Background
The sound signals output by the sound output components such as the existing loudspeaker, the screen ultrasonic output component and the like are transmitted along with the air vibration, and the output sound signals can be diffused to the periphery. For example, when a user uses a mobile terminal to make a call or listen to music, the sound signal output from the sound output means is spread from the mobile terminal to the surrounding. However, the user does not want the call information to be heard by others nor does the sound of the music interfere with the environment in which the other people are located. Therefore, the sound signal output by the sound output part has no directivity, so that the sound signal output by the mobile terminal spreads to the periphery along with the propagation of the air vibration, the privacy is poor, and the user experience is poor.
At present, a transparent screen directional speaker combining a screen sound field with an ultrasonic transducer is under development. The screen self vibration is used as the loudspeaker, the resonant cavity space of the traditional loudspeaker is saved, and meanwhile, the directional propagation characteristic meets the privacy requirement of personal electronic equipment and the noninterference requirement of public equipment.
However, the currently researched directional ultrasonic transparent material is extremely easy to generate creep to cause functional failure in a working environment, and in order to ensure the stability of the product function under a multi-layer structure and the reliability to reach the industry standard, the directional ultrasonic transparent material needs to be tensioned so as to avoid the influence of the larger creep of the material in working to the ultrasonic acoustic characteristics.
The invention comprises the following steps:
the invention aims to provide a sounding layer tensioning process by positioning and baking a sounding layer.
In order to achieve the above object, the present invention provides a sounding layer tensioning process, including:
s1, arranging a frame pasting area on a non-sounding layer backboard, and pasting a sounding layer and the non-sounding layer backboard to a frame through the frame pasting area;
s2, shaping the sounding layer at a certain shaping temperature and shaping time, tensioning the sounding layer after shaping, wherein the shaping temperature range is 50-200 ℃, and the shaping time range is 5-180 min.
In a preferred embodiment, the material of the sounding layer is a polymer or composite material or flexible glass, and the polymer or composite material includes any one of triacetate fiber film TAC, polyethylene terephthalate PET, optical material COP, polyimide PI, and polyvinylidene fluoride PVDF.
In a preferred embodiment, the frame attaching area includes a shaping area, or a shaping area and a positioning area, where the shaping area and the positioning area are all disposed along a circle of the outer edge of the non-sounding layer back plate, and the shaping area is located outside the positioning area.
In a preferred embodiment, the shaping zone uses a first anchoring material resistant to 90-350 ℃ and the positioning zone uses a second anchoring material resistant to 80-150 ℃.
In a preferred embodiment, the first fixing material is cured simultaneously during the shaping process of the sounding layer, and the first fixing material is cured before the shaping process of the sounding layer is completed.
In a preferred embodiment, the curing temperature of the first fixing material is less than or equal to the setting temperature of the sounding layer, and the curing time is less than or equal to the setting time of the sounding layer.
In a preferred embodiment, a protective film is further attached to the outer surface of the sounding layer, and the protective film is torn off after the sounding layer is shaped.
In a preferred embodiment, before step S1, the method further comprises: the sounding layer is pre-tensioned by a tensioning device.
In a preferred embodiment, the process comprises:
s1, a frame pasting area is arranged on a non-sounding layer backboard, a sounding layer and the non-sounding layer backboard are subjected to frame pasting through the frame pasting area, the sounding layer material is high polymer or composite material with the shrinkage rate lower than 1.5%, the frame pasting area comprises a shaping area or a shaping area and a positioning area, the shaping area uses a first fixing material resistant to 50-200 ℃, and the positioning area uses a second fixing material resistant to 5-200 ℃;
s2, shaping the sounding layer at the shaping temperature of 80-200 ℃ and the shaping time of 10-50 min, so that the sounding layer is tensioned after shaping.
In a preferred embodiment, the process comprises:
s1, a frame pasting area is arranged on a non-sounding layer backboard, a sounding layer and the non-sounding layer backboard are subjected to frame pasting through the frame pasting area, the sounding layer material is high polymer or composite material with the shrinkage rate of 1.5% -8%, the frame pasting area comprises a shaping area or a shaping area and a positioning area, the shaping area uses a first fixing material resistant to 50 ℃ -200 ℃, and the positioning area uses a second fixing material resistant to 5 ℃ -200 ℃;
s2, shaping the sounding layer at a shaping temperature of 60-120 ℃ and a shaping time of 10-50 min, and tensioning the sounding layer after shaping.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, after the sounding layer and the non-sounding layer backboard are positioned in a frame-pasting manner, the sounding layer is baked to realize shrinkage shaping, so that the process is simple and easy to realize.
2. According to the invention, through the matching design of the sounding layer material, the frame fixing structure, the fixing material, the curing time of the fixing material, the shaping condition and the like, the precise control of the contraction amount of the sounding layer is realized.
3. The invention realizes shrinkage shaping of the sounding layer, so that the sounding layer is not easy to creep in the working process, and the ultrasonic acoustic characteristics of the related directional ultrasonic products are not affected.
Description of the drawings:
FIG. 1 is a schematic flow chart of a sounding layer tensioning process of the present invention;
FIG. 2 is a schematic diagram of a split structure of a back plate of a generating layer and a non-sounding layer in an un-frame-attached state;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;
FIG. 4 is a schematic structural view of one preferred embodiment of the styling zone of the present invention.
The reference numerals are:
1. the sounding layer comprises a non-sounding layer backboard, 11, a frame attaching area, 111, a shaping area, 111a, a first limiting part, 111b, a second limiting part, 111c, a fixing area, 112, a positioning area, 2 and a sounding layer.
The specific embodiment is as follows:
the following detailed description of specific embodiments of the invention is, but it should be understood that the invention is not limited to specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1, the sounding layer tensioning process disclosed by the invention comprises the following steps:
s1, a frame attaching area 11 is arranged on a non-sounding layer backboard 1, and a sounding layer 2 and the non-sounding layer backboard 1 are subjected to frame attaching through the frame attaching area 11.
In particular, as shown in fig. 2 and 3, the non-sound-producing layer back plate 1 is made of a material having a high young's modulus, such as glass, but not limited to glass, but may be made of other opaque materials. The sounding layer 2 is made of a membrane material with relatively low Young's modulus, such as a high molecular polymer or composite material or flexible glass, wherein the high molecular polymer or composite material can be any one of TAC (triacetate cellulose) film, PET (polyethylene terephthalate), COP (coefficient of performance) optical material, PI (polyimide), PVDF (polyvinylidene fluoride) and the like.
Before baking and shaping, the sounding layer 2 is effectively fixed and positioned with the non-sounding layer backboard 1 through the frame pasting area 11, so that the sounding layer 2 can be well counteracted with material deformation in the baking and shaping process, and a good tensioning and shaping effect is achieved.
The frame attaching region 11 is disposed on the non-sounding layer backboard 1, or may be disposed on the sounding layer 2, in this embodiment, disposed on the non-sounding layer backboard 1, specifically along the frame of the non-sounding layer backboard 1. The specific implementation structure of the frame attachment area 11 can be designed differently according to different materials of the sounding layer 2. Specifically, the frame attaching region 11 may include a separate shaping region 111, or a mixed structure of the shaping region 111 and the positioning region 112, which is not limited to the frame attaching region 11 defined herein, as long as the sounding layer 2 can be attached to and fixed to the frame of the non-sounding layer back plate 1 before shaping. The fixing effect of the shaping area 111 is better than that of the positioning area 112, and when the fixing is performed, it is preferable to use a separate shaping area 111 or a mixed structure of the shaping area 111 and the positioning area 112. Wherein, shaping area 111 and location area 112 are all set up along the outside edge of non-sound layer backplate 1 round, and shaping area 111 is located the outside of location area 112. The positioning area 112 is mainly used for positioning the sounding layer 2 and the non-sounding layer backboard 1, and the shaping area 111 is mainly used for fixing the sounding layer 2 and the non-sounding layer backboard 1 after positioning the sounding layer 2 and the non-sounding layer backboard 1.
For some sounding layers 2 made of low shrinkage materials, such as sounding layers 2 made of materials with shrinkage rate of less than 1.5% in the TD (transverse direction ) and MD (Machine Direction, longitudinal direction), such as optical PET substrates, COP substrates, etc.; and the acoustic layer 2 is made of materials with shrinkage rate of between 1.5 and 8 percent in TD (transverse direction ) and MD (Machine Direction, longitudinal direction), such as an optical grade TAC substrate. In order to prevent creep of the sounding layer 2 made of these materials in the working environment, the frame attachment region 11 may include a shaping region 111 or a mixed structure of the shaping region 111 and the positioning region 112. If only the positioning area 112 is separately set, that is, the sounding layer 2 is fixed with the non-sounding layer backboard 1 through the positioning area 112, the fixing effect of the positioning area 112 is poor, the later curing effect of the sounding layer 2 cannot be ensured, and thus the later creep of the material cannot be prevented, and the shaping effect of the sounding layer 2 is affected.
For another example, for some sounding layers 2 made of materials with higher Young's modulus, such as ultrathin flexible glass, the frame-pasting region 11 can comprise a single shaping region 111, a single positioning region 112, or a mixed structure of the shaping region 111 and the positioning region 112. The width of the shaping region 111 is not particularly limited, but in order to prevent the deformation of the material due to shearing force, the width is preferably selected to be more than 2 mm.
In addition, preferably, as shown in fig. 4, when a separate shaping area 111 is adopted, the shaping area 111 may be designed as a shaping area 111 with a wall shape, and specifically includes a first limiting portion 111a, a second limiting portion 111b and a fixing area 111c, where the first limiting portion 111a and the second limiting portion 111b are sequentially disposed along the outer edge of the non-sounding layer back plate 1, and a fixing area 111c is formed therebetween, and the wall shape shaping area 111 can ensure the thickness and width of the fixing material in the fixing area 111 c.
Corresponding fixing materials are respectively arranged in the shaping area and the positioning area, and for convenience of description, the fixing materials in the shaping area are defined as first fixing materials, and the fixing materials in the positioning area are defined as second fixing materials. The second fixing material is acid-free high-transmittance chemical adhesive with the temperature resistance of 80-150 ℃ and has the advantages that: for the directional ultrasonic screen with a narrow frame, a certain area is attached to a second fixing material, the material is transparent and bubble-free, the section difference is visible except for the boundary, and other areas are integrated with the visible area. If non-transparent materials are adopted, a high-fitting-precision process is required to match the narrow frame. The first fixing material is generally colloid which is higher in temperature than the second fixing material, such as liquid colloid which is resistant to 90-350 ℃, and particularly high-temperature cured silica gel. Of course, the present invention is not limited to the glue here for the first fixing material and the second fixing material, and other fixing materials that can stably fix and adhere the sounding layer 2 and the non-sounding layer back plate 1 together are also applicable to the present invention.
S2, shaping the sounding layer 2 at a certain shaping temperature and shaping time, tensioning after shaping the sounding layer 2, wherein the shaping temperature range is 50-200 ℃, and the shaping time range is 5-180 min.
Specifically, after the sounding layer 2 and the non-sounding layer backboard 1 are stably and fixedly attached together through the frame attaching area 11, the sounding layer 2 needs to be baked to shrink and fix. The setting time and the setting temperature are correspondingly adjusted according to the different materials of the sounding layer 2, the first fixing material and the like, so that the sounding layer 2 achieves the maximum shrinkage after setting. In the implementation, the setting temperature range can be 50-200 ℃, and the setting time range can be 5-180 min.
For some first fixing materials to be cured, the first fixing materials are cured simultaneously in the shaping process of the sounding layer 2, and the curing process is completed before the shaping process is finished. If the setting temperature of the sounding layer 2 ranges from 50 ℃ to 200 ℃ and the setting time ranges from 5min to 180min, the curing temperature of the first fixing material is less than or equal to the setting temperature of the sounding layer 2, for example, the curing temperature is 80 ℃ to 150 ℃, and the curing time is shorter than or equal to the setting time of the sounding layer 2, for example, the curing time is 5min to 20min.
In addition, a protective film (not shown) is adhered to the outer surface of some thin sounding layers, so that the sounding layers 2 are smooth and do not creep, and the integration of the protective film of the sounding layers 2 and the sounding layers 2 is required to be ensured during shaping, namely the protective film is torn off after shaping the sounding layers 2. If the protective film is torn off for reshaping, the thin sounding layer 2 will have material wrinkling phenomenon after shaping; for the thick sounding layer 2 material, for example, the thicker the sounding layer 2 is with the thickness of more than 100um, the lower the wrinkling probability of the sounding layer 2 is, for example, the sounding layer 2 with the thickness of more than 200um can be matched with the independent shaping area 111, and the shaping evenness and compactness can be ensured without a protective film.
Further, before the sounding layer 2 is attached to the frame of the non-sounding layer back plate 1, the sounding layer 2 may be pre-tensioned by a tensioning device (not shown). However, after the pre-tensioning, the design of the later frame attachment zone 11, the setting time, the setting temperature, etc. also need to be adjusted accordingly.
The process of the sounding layer tensioning process of the present invention is described in detail below in two specific embodiments.
Example 1
The sounding layer 2 is an optical PET substrate or COP substrate with shrinkage rate lower than 1.5%, and the frame attachment region 11 may include a shaping region 111, or a mixed structure of the shaping region 111 and a positioning region 112, and the width of the shaping region 111 is preferably not lower than 1.5mm. The first fixing material of the shaping area 111 is high temperature curing silica gel resistant to 50-200 ℃, and the second fixing material of the positioning area 112 is acid-free high-transmittance optical gel resistant to 5-200 ℃. In the shaping process, the shaping temperature is 80-200 ℃ and the shaping time is 10-50 min.
Example 2
The sounding layer 2 is a polarizer type of an optical TAC substrate with a shrinkage of 1.5% -8%, and the frame-attaching region 11 may include a shaping region 111, or a mixed structure of the shaping region 111 and a positioning region 112, and the width of the shaping region 111 is preferably not less than 1.5mm. The first fixing material of the shaping area 111 is high temperature curing silica gel resistant to 50-200 ℃, and the second fixing material of the positioning area 112 is acid-free high-transmittance optical gel resistant to 5-200 ℃. In the shaping process, the shaping temperature is 50-105 ℃, preferably 60-80 ℃ and the shaping time is 10-50 min. If the film is a non-polaroid, the shaping temperature can be 60-120 ℃ as long as the efficacy of the sounding layer is not affected.
The invention has the advantages that 1, after the sounding layer 2 and the non-sounding layer backboard 1 are in frame pasting and positioning, the sounding layer 2 is baked to realize shrinkage shaping, the process is simple, and the realization is easy; 2. according to the invention, through the matching design of the sounding layer 2 material, the frame fixing structure, the fixing material, the curing time of the fixing material, the shaping condition and the like, the accurate control of the contraction amount of the sounding layer 2 is realized; 3. according to the invention, the contraction and shaping of the sounding layer 2 are realized, so that the sounding layer 2 is not easy to creep in the working process, and the ultrasonic acoustic characteristics of the related directional ultrasonic products are not affected.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (8)
1. A sounding layer tensioning process, the process comprising:
s1, arranging a frame pasting area on a non-sounding layer backboard, and pasting a sounding layer and the non-sounding layer backboard to a frame through the frame pasting area;
s2, shaping the sounding layer at a certain shaping temperature and shaping time, tensioning the sounding layer after shaping, wherein the shaping temperature range is 50-200 ℃, the shaping time range is 5-180 min, the frame pasting region comprises a shaping region and a positioning region, the shaping region and the positioning region are all arranged along the outer edge of the back plate of the non-sounding layer in a circle, the shaping region is positioned at the outer side of the positioning region, the shaping region uses a first fixing material resistant to 90-350 ℃, and the positioning region uses a second fixing material resistant to 80-150 ℃.
2. The process for tensioning the sounding layer according to claim 1, wherein the sounding layer is made of polymer or composite material or flexible glass, and the polymer or composite material comprises any one of triacetate fiber film TAC, polyethylene terephthalate PET, optical material COP, polyimide PI and polyvinylidene fluoride PVDF.
3. The sounding layer tensioning process of claim 1, wherein the first fixing material is cured simultaneously during the sounding layer shaping process, and the first fixing material is cured before the sounding layer shaping process is completed.
4. The process of claim 3, wherein the first fixing material has a curing temperature less than or equal to a setting temperature of the sounding layer and a curing time less than or equal to the setting time of the sounding layer.
5. The process for tensioning a sounding layer as set forth in claim 1, wherein a protective film is further attached to the outer surface of the sounding layer, and the protective film is torn off after the sounding layer is shaped.
6. The sounding layer tensioning process of claim 1, further comprising, prior to step S1: the sounding layer is pre-tensioned by a tensioning device.
7. The sounding layer tensioning process of claim 1, wherein the process comprises:
s1, a frame pasting area is arranged on a non-sounding layer backboard, a sounding layer and the non-sounding layer backboard are subjected to frame pasting through the frame pasting area, the sounding layer is made of high polymer or composite materials with shrinkage rate lower than 1.5%, the frame pasting area comprises a shaping area and a positioning area, the shaping area is made of a first fixing material resistant to 50-200 ℃, and the positioning area is made of a second fixing material resistant to 5-200 ℃;
s2, shaping the sounding layer at the shaping temperature of 80-200 ℃ and the shaping time of 10-50 min, and tensioning the sounding layer after shaping.
8. The sounding layer tensioning process of claim 1, wherein the process comprises:
the method comprises the steps of S1, arranging a frame pasting area on a non-sounding layer backboard, pasting a sounding layer and the non-sounding layer backboard through the frame pasting area, wherein the sounding layer is made of high polymer or composite materials with the shrinkage rate of 1.5% -8%, the frame pasting area comprises a shaping area and a positioning area, the shaping area uses a first fixing material resistant to 50 ℃ -200 ℃, and the positioning area uses a second fixing material resistant to 5 ℃ -200 ℃;
s2, shaping the sounding layer at a shaping temperature of 60-120 ℃ and a shaping time of 10-50 min, and tensioning the sounding layer after shaping.
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| CN202111004997.4A CN113691926B (en) | 2021-08-30 | 2021-08-30 | Sounding layer tensioning process |
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| CN202111004997.4A CN113691926B (en) | 2021-08-30 | 2021-08-30 | Sounding layer tensioning process |
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| CN113691926A CN113691926A (en) | 2021-11-23 |
| CN113691926B true CN113691926B (en) | 2023-08-29 |
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| CN114937428B (en) * | 2022-04-28 | 2023-07-25 | 苏州清听声学科技有限公司 | Vibrating layer tensioning process of directional sounding display screen |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001119790A (en) * | 1999-10-22 | 2001-04-27 | Nec Viewtechnology Ltd | Vibration film and flat speaker |
| CN102572667A (en) * | 2012-02-10 | 2012-07-11 | 清华大学 | Flexible and transparent thermotropic sounding apparatus |
| JP2015180053A (en) * | 2014-02-26 | 2015-10-08 | 京セラ株式会社 | Acoustic generator, acoustic generation device, electronic apparatus, and portable terminal |
| WO2016195559A1 (en) * | 2015-06-05 | 2016-12-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Changing the acoustic performance of a sound emitting device |
| JP2017040907A (en) * | 2015-08-18 | 2017-02-23 | 住友化学株式会社 | Convex surface side polarizing plate for curved image display panel |
| CN110830893A (en) * | 2019-09-30 | 2020-02-21 | 成都泰声科技有限公司 | Transparent screen directional ultrasonic loudspeaker |
| CN111862840A (en) * | 2020-07-31 | 2020-10-30 | 京东方科技集团股份有限公司 | Screen assembly and electronic equipment |
| WO2020253142A1 (en) * | 2019-06-17 | 2020-12-24 | 海信视像科技股份有限公司 | Display apparatus, sound generating substrate, and projection screen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012115158A1 (en) * | 2011-02-23 | 2012-08-30 | Nagaoka Mitsuo | Speaker device |
| KR102312266B1 (en) * | 2017-08-03 | 2021-10-12 | 엘지디스플레이 주식회사 | Display apparatus |
| KR20200114914A (en) * | 2019-03-29 | 2020-10-07 | 엘지디스플레이 주식회사 | Flexible vibration module and display apparatus comprising the same |
-
2021
- 2021-08-30 CN CN202111004997.4A patent/CN113691926B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001119790A (en) * | 1999-10-22 | 2001-04-27 | Nec Viewtechnology Ltd | Vibration film and flat speaker |
| CN102572667A (en) * | 2012-02-10 | 2012-07-11 | 清华大学 | Flexible and transparent thermotropic sounding apparatus |
| JP2015180053A (en) * | 2014-02-26 | 2015-10-08 | 京セラ株式会社 | Acoustic generator, acoustic generation device, electronic apparatus, and portable terminal |
| WO2016195559A1 (en) * | 2015-06-05 | 2016-12-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Changing the acoustic performance of a sound emitting device |
| JP2017040907A (en) * | 2015-08-18 | 2017-02-23 | 住友化学株式会社 | Convex surface side polarizing plate for curved image display panel |
| WO2020253142A1 (en) * | 2019-06-17 | 2020-12-24 | 海信视像科技股份有限公司 | Display apparatus, sound generating substrate, and projection screen |
| CN110830893A (en) * | 2019-09-30 | 2020-02-21 | 成都泰声科技有限公司 | Transparent screen directional ultrasonic loudspeaker |
| CN111862840A (en) * | 2020-07-31 | 2020-10-30 | 京东方科技集团股份有限公司 | Screen assembly and electronic equipment |
Non-Patent Citations (1)
| Title |
|---|
| 石墨烯大规模机械剥离制备和石墨烯高性能发声器;张梓晗;《中国优秀博士论文全文数据库工程科技II辑》;全文 * |
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